CN106189325A - A kind of lignin enhancement mode Wood-plastic material and preparation method thereof - Google Patents

A kind of lignin enhancement mode Wood-plastic material and preparation method thereof Download PDF

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Publication number
CN106189325A
CN106189325A CN201610634112.1A CN201610634112A CN106189325A CN 106189325 A CN106189325 A CN 106189325A CN 201610634112 A CN201610634112 A CN 201610634112A CN 106189325 A CN106189325 A CN 106189325A
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China
Prior art keywords
lignin
wood
plastic material
enhancement mode
parts
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CN201610634112.1A
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Chinese (zh)
Inventor
应汉杰
朱晨杰
唐成伦
甘涛
单军强
陈勇
吴菁岚
柳东
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Nanjing Tech University
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Nanjing Tech University
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Priority to CN201610634112.1A priority Critical patent/CN106189325A/en
Publication of CN106189325A publication Critical patent/CN106189325A/en
Priority to CN201710659376.7A priority patent/CN107298868B/en
Priority to US15/801,210 priority patent/US10400106B2/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/25—Component parts, details or accessories; Auxiliary operations
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    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
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    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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    • B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
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Abstract

The invention discloses a kind of lignin enhancement mode Wood-plastic material, the formula of this Wood-plastic material includes the component of following weight portion: lignocellulose 20～60 parts, lignin 20～40 parts, recycled thermoplastics 20～40 parts, compatilizer 2～10 parts, inorganic mineral powder 5～10 parts, stain 1～5 parts, lubricant 1～5 parts.The invention also discloses the preparation method of above-mentioned lignin enhancement mode Wood-plastic material.By adding lignin in Wood-plastic material, significantly improve the mechanical property of Wood-plastic material, heat stability, ageing resistace.

Description

A kind of lignin enhancement mode Wood-plastic material and preparation method thereof
Technical field
The invention belongs to field of compound material, be specifically related to can be shown by interpolation lignin in conventional Wood-plastic material formula Write the correlated performance improving Wood-plastic material, by Granulation Equipments repacking upgrading, improving lignocellulose etc. and thermoplastic The compatibility, simplification process means improve treatment effeciency.
Background technology
Wood plastic composite (Wood-Plastic Composites, WPC) is that the class being in recent years surging forward both at home and abroad is new Type composite, refers to utilize polyethylene, polypropylene and polrvinyl chloride etc., replaces common resin adhesive, with more than 50% with On wood powder, rice husk, the useless plant wood fibre such as straw be mixed into new wood materials, then through extruding, mold pressing, injection moulding etc. Plastic processing, the sheet material produced or section bar.The production of wood plastic composite and use, will not distribute danger to surrounding The volatile matter of evil human health, has advantages such as not chapping, indeformable, corrosion-resistant, pollution-free, nuisanceless, reusable edible, is A kind of brand-new Green Product, is also a kind of ecological clean composite.Meanwhile, this kind of material be widely used in build The industries such as material, furniture, logistics packaging.
At present, plant wood fibre is as the key component produced in wood plastic composite, from consumption kind Through being widely studied and applying.Application number: CN201310324655.X applies different types of Plant fiber to carry out Wood-plastic material Production.Application number: CN204398445U and CN105315688A is application problem and the wood powder shortage etc. solving agricultural stalk Problem primary study also obtains good effect with the lignin products of the Plant fiber such as agricultural stalk.And lignin is as second Big Renewable resource, is but not applied to Wood-plastic material correlational study.Lignin is the class thing being made up of the aromatic alcohol being polymerized Matter, is present in lignum, and Main Function is to carry out sclereid wall, for secondary wall main component by formation intertexture net.Wood Quality is predominantly located between cellulose fibre, plays resistance to compression effect.Therefore can carry in theory during lignin adds Wood-plastic material to The performance of high Wood-plastic material.
Lignin is similar with Plant fiber all contains hydrophilic group, and need its graft modification raising and plastics is compatible Property, generally use anhydrides compatilizer and the hydroxyl etc. of lignin with cellulose that esterification occurs, improve its hydrophilic too strong, Improve the interface compatibility with plastics, improve the properties of Wood-plastic material.
By transformation and upgrade double screw extruder, carry out secondary base pelletize, lubricant can be avoided anti-to compatilizer esterification The destruction answered, improves esterifying efficiency.Two grades of continuous productions also improve production efficiency, reduce production cost.
Summary of the invention
The present invention provides lignin enhancement mode Wood-plastic material.
The present invention also to solve the technical problem that the preparation method being to provide above-mentioned lignin enhancement mode Wood-plastic material.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of lignin enhancement mode Wood-plastic material, the formula of this Wood-plastic material includes the component of following weight portion:
Wherein, described lignocellulose is the mixture of one or more of wood powder, bamboo powder, powder of straw, described wood The particle diameter of quality is 100～400 mesh, preferably 200～300 mesh, and described powder of straw is Wheat Straw or rape stalk.
Wherein, described recycled thermoplastics is the mixture of one or more in PP, PE, PVC, PS.
Wherein, described compatilizer is maleic anhydride, acrylic acid, maleic anhydride graft PP, maleic anhydride grafting PE, Malaysia Acid anhydride-grafted PVC, maleic anhydride grafting PS, acrylic acid-grafted PP, acrylic acid-grafted PE, acrylic acid-grafted PVC, acrylic acid-grafted The mixture of one or more in PS.
Wherein, described inorganic mineral powder is one or more in calcium carbonate, calcium silicates, Pulvis Talci, glass fiber powder Mixture, preferably calcium carbonate.
Wherein, described lubricant is stearic acid, calcium stearate, zinc stearate, polyol ester, oleamide, microlite One or both mixture in the mixture of one or more in wax, EBS, preferably calcium stearate, EBS.
Wherein, described stain is in iron oxide red, iron oxide yellow, iron oxide blue, iron oxide purple, iron oxide black Kind or multiple mixture.
The preparation method of above-mentioned lignin enhancement mode Wood-plastic material, comprises the steps:
(1) by lignocellulose, lignin, recycled thermoplastics, compatilizer and inorganic mineral powder according in claim 1 Ratio be placed in mixer cold mixed 5～15 minutes, rotating speed is 200～300rpm, and temperature is 70～90 DEG C, obtains the most mixed thing Material；
(2) carrying out dynamic extruding mixing by just mixing material and join in the one-level screw rod of double screw extruder, temperature is 150 ～190 DEG C, rotating speed is 300～400rpm, obtains material is blended；
(3), time during material enters two grades of screw rods of double screw extruder in one-level twin screw, lubricant, stain are added Carrying out two stage treatment extruding pelletization, temperature is 150～190 DEG C, and rotating speed is 300～400rpm, obtains lignin enhancement mode wood Moulding material.
The lignin enhancement mode Wood-plastic material that the preparation method of above-mentioned lignin enhancement mode Wood-plastic material prepares.
The application of above-mentioned lignin enhancement mode Wood-plastic material.
Beneficial effect:
Lignin is added in Wood-plastic material by the present invention, can significantly improve the properties of Wood-plastic material, be above National standard.Use the in-situ modified pelletize of two-stage, significantly improve the compatibility of lignocellulose, lignin and thermoplastic.
Accompanying drawing explanation
Fig. 1 is double screw extruder schematic diagram.
Detailed description of the invention
According to following embodiment, the present invention be may be better understood.But, as it will be easily appreciated by one skilled in the art that reality Execute the content described by example and be merely to illustrate the present invention, and should be also without limitation on basis described in detail in claims Invention.
Comparative example:
Wheat stalk is crushed to 300 mesh, and drying to water content is 2%, by weight the wheat stalk 50 parts that will dry, 10 parts of thermoplastics PVC of thermoplastic PE 10 parts, nano-calcium carbonate 10 parts, maleic anhydride grafting PE 5 parts, acrylic acid Grafting PVC 5 parts, is placed in the cold mixed 10min of mixer high speed, rotating speed 400rpm, temperature 85 DEG C.First batch mixing is joined double spiral shell Carry out in-situ modified extruding on bar extruder to be blended, rotating speed 400rpm, temperature 160 DEG C.Treat that material enters two grades of twin-screw extrusions Machine, by EBS 2 parts, calcium stearate 2 parts, iron oxide red 10 parts, carries out extruder grain, obtains wood and moulds just material, by pelletize just material Material is put in conical-double-helical rod extruder, and according to default barrel zone temperature and die head temperature, engine speed is 20 turns, charger rotating speed It is 15 turns, through mould extrusion molding, prepares lignin enhancement mode Wood-plastic profiles.
Embodiment 1:
Wheat Straw and enzymolysis xylogen are crushed to 300 mesh, and drying to water content is 2%.Wheat Straw 30 weight will be dried Part, lignin 20 parts, thermoplastic PE20 part, thermoplastic PVC10 part, nano-calcium carbonate 10 parts, maleic anhydride is grafted PE 5 parts, acrylic acid-grafted PVC 5 parts, be placed in the cold mixed 10min of mixer high speed, rotating speed 400 turns, temperature 85 DEG C.To just mix Material join carry out on double screw extruder in-situ modified extruding be blended, rotating speed 400 turns, temperature 160 DEG C.Treat that material enters two grades Double screw extruder, by EBS 2 parts, calcium stearate 2 parts, iron oxide red 10 parts, carries out extruder grain, obtains wood and moulds just material. Putting in conical-double-helical rod extruder by pelletize just material, according to default barrel zone temperature and die head temperature, engine speed is 20 turns, Charger rotating speed is 15 turns, through mould extrusion molding, prepares lignin enhancement mode Wood-plastic profiles.
Embodiment 2:
Wheat Straw and enzymolysis xylogen are crushed to 300 mesh, and drying to water content is 2%.Wheat Straw 20 weight will be dried Part, lignin 30 parts, thermoplastic PE 20 parts, thermoplastic PP 10 parts, nano-calcium carbonate 10 parts, maleic anhydride is grafted PE 5 parts, acrylic acid-grafted PP 5 parts, be placed in the cold mixed 10min of mixer high speed, rotating speed 400 turns, temperature 85 DEG C.By first batch mixing Join carry out on double screw extruder in-situ modified extruding be blended, rotating speed 400 turns, temperature 160 DEG C.Treat that material enters two grades pairs Screw extruder, by EBS 2 parts, calcium stearate 2 parts, iron oxide red 10 parts, carries out extruder grain, obtains wood and moulds just material.Will Pelletize just material is put in conical-double-helical rod extruder, and according to default barrel zone temperature and die head temperature, engine speed is 20 turns, adds Material machine rotating speed is 15 turns, through mould extrusion molding, prepares lignin enhancement mode Wood-plastic profiles.
Embodiment 3:
Enzymolysis xylogen is crushed to 300 mesh, and drying to water content is 2%.Lignin 50 parts, thermoplastic will be dried PE20 part, thermoplastic PS10 part, nano-calcium carbonate 10 parts, maleic anhydride grafting PS 10 parts, acrylic acid-grafted PS 5 parts, It is placed in the cold mixed 10min of mixer high speed, rotating speed 400 turns, temperature 85 DEG C.First batch mixing is joined on double screw extruder and carry out In-situ modified extruding is blended, rotating speed 400 turns, temperature 160 DEG C.Treat that material enters two grades of double screw extruders, by EBS 2 parts, firmly Fat acid calcium 2 parts, iron oxide red 10 parts, carry out extruder grain, obtain wood and mould just material.Pelletize just material is put into conical-double-helical rod In extruder, according to default barrel zone temperature and die head temperature, engine speed is 20 turns, and charger rotating speed is 15 turns, squeezes through mould Go out molding, prepare lignin enhancement mode Wood-plastic profiles.
According to GB/T24508 2009 " Wood-plastic floor ", the lignin enhancement mode wood plastic composite of above-described embodiment is produced Product carry out performance detection, and testing result is as shown in table 1.
Table 1 lignin enhancement mode wood plastic composite performance test results
Test result indicate that, the lignin of proper proportion adds the performance that can significantly improve wood plastic composite, and high Index request in national standard, it is possible to meet the market demand, but lignin can not replace plant wood fibre (wood completely Powder, powder of straw etc.).

Claims (11)

1. a lignin enhancement mode Wood-plastic material, it is characterised in that the formula of this Wood-plastic material includes the group of following weight portion Point:
Lignin enhancement mode Wood-plastic material the most according to claim 1, it is characterised in that described lignocellulose is Wood powder, bamboo powder, the mixture of one or more of powder of straw.
Lignin enhancement mode Wood-plastic material the most according to claim 1, it is characterised in that described lignin is that papermaking is black Night lignin or biological enzymolysis lignin.
Lignin enhancement mode Wood-plastic material the most according to claim 1, it is characterised in that described recycled thermoplastics Mixture for one or more in PP, PE, PVC, PS.
Lignin enhancement mode Wood-plastic material the most according to claim 1, it is characterised in that described compatilizer is maleic acid Acid anhydride, acrylic acid, maleic anhydride graft PP, maleic anhydride grafting PE, maleic anhydride grafting PVC, maleic anhydride grafting PS, acrylic acid The mixture of one or more in graft PP, acrylic acid-grafted PE, acrylic acid-grafted PVC, acrylic acid-grafted PS.
Lignin enhancement mode Wood-plastic material the most according to claim 1, it is characterised in that described inorganic mineral powder is carbonic acid The mixture of one or more in calcium, calcium silicates, Pulvis Talci, glass fiber powder.
Lignin enhancement mode Wood-plastic material the most according to claim 1, it is characterised in that described lubricant is stearic The mixture of one or more in acid, calcium stearate, zinc stearate, polyol ester, oleamide, microcrystalline wax, EBS.
Lignin enhancement mode Wood-plastic material the most according to claim 1, it is characterised in that described stain is ferrum oxide The mixture of one or more in red, iron oxide yellow, iron oxide blue, iron oxide purple, iron oxide black.
9. the preparation method of lignin enhancement mode Wood-plastic material described in any one of claim 1～8, it is characterised in that include as Lower step:
(1) by lignocellulose, lignin, recycled thermoplastics, compatilizer and inorganic mineral powder according to the ratio in claim 1 Example is placed in cold in mixer mixing 5～15 minutes, and rotating speed is 200～300rpm, and temperature is 70～90 DEG C, obtains the most mixed material；
(2) carry out dynamic extruding mixing by just mixing material and join in the one-level screw rod of double screw extruder, temperature be 150～ 190 DEG C, rotating speed is 300～400rpm, obtains material is blended；
(3) time during material enters two grades of screw rods of double screw extruder in one-level twin screw, add lubricant, stain is carried out Two stage treatment extruding pelletization, temperature is 150～190 DEG C, and rotating speed is 300～400rpm, obtains lignin enhancement mode wood plastic Material.
10. the lignin enhancement mode wood that the preparation method of lignin enhancement mode Wood-plastic material described in claim 9 prepares is moulded Material.
The application of lignin enhancement mode Wood-plastic material described in 11. claim 10.
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CN110551403A (en) * 2019-09-29 2019-12-10 西南林业大学 High-strength and biological-durability wood-plastic composite material and preparation method thereof
CN113956540A (en) * 2020-07-20 2022-01-21 浙江欧乐模具有限公司 Mixed polymer plant material formula and preparation method
CN113105750A (en) * 2021-04-08 2021-07-13 安徽国风木塑科技有限公司 Special-shaped mixed-volume reinforced wood-plastic composite material and preparation method thereof
CN113801339A (en) * 2021-07-02 2021-12-17 上海昶法新材料有限公司 Modified lignin and preparation method thereof

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